vs.

      Komatsu WA250-6 vs. Case 721C

      11 reasons to buy Komatsu WA250-6:

      Sizes

      Clearance 465 mm and 419 mm 10 % more or 46 mm

      Shovel

      Breakout power 27210 pound and 35005 pound 22 % less or 7795 pound
      Bucket capacity with top 2.3 m3 and 1.9 m3 17 % more or 0.4 m3
      Brimmed bucket capacity 2 m3 and 1.6 m3 20 % more or 0.4 m3

      Operation

      Engine oil volume 23 l. and 20.8 l. 10 % more or 2.2 l.
      Static tipping weight 11960 kg and 10533 kg 12 % more or 1427 kg

      Hydraulic system

      Pump bandwidth 78 l/min and 70.4 l/min 10 % more or 7.6 l/min
      Unloading time 1.7 sec and 1.8 sec 6 % less or 0.1 sec
      Lowering time 3.6 sec and 5.1 sec 29 % less or 1.5 sec

      Gear box

      Maximum reverse gear 38 km/h and 27.5 km/h 28 % more or 10.5 km/h
      Reverse gears number 4 and 3 25 % more or 1

      13 reasons to buy Case 721C:

      Shovel

      Unloading ground clearance at maximum lifting 3010 mm and 2850 mm 5 % more or 160 mm

      Operation

      Fuel Capacity 204 l. and 186 l. 9 % more or 18 l.
      Hydraulic system fluid volume 153.3 l. and 67 l. 56 % more or 86.3 l.
      Cooling system fluid volume 32.2 l. and 22 l. 32 % more or 10.2 l.
      Front axle / differential fluid volume 28 l. and 18 l. 36 % more or 10 l.
      Rear axle / differential fluid volume 22 l. and 18 l. 18 % more or 4 l.
      Turn radius 5250 mm and 12060 mm 56 % less or 6810 mm

      Motor

      Effective power 113.3 kW and 103 kW 9 % more or 10.3 kW
      Full power 123 kW and 104 kW 15 % more or 19 kW
      Power measured at 2200 rev / min and 2000 rev / min 9 % more or 200 rev
      Displacement 8.3 l. and 6.7 l. 19 % more or 1.6 l.

      Hydraulic system

      Lifting time 5.4 sec and 6.3 sec 14 % less or 0.9 sec

      Gear box

      Maximum forward speed 38.9 km/h and 38 km/h 2 % more or 0.9 km/h

      Neutral reasons:

      Sizes

      Between tyres width 2470 mm and 2530 mm
      Height to cab upper part 3200 mm and 3260 mm
      Wheelbase 2900 mm and 2900 mm
      Hinge axis maximum height 3795 mm and 3810 mm
      Length with bucket on ground level 7055 mm and 6890 mm

      Shovel

      Shovel width 2685 mm and 2620 mm

      Operation

      Working weight 11545 kg and 13439.9 kg

      Motor

      Cylinders number 6 and 6
      Aspiration turbocharging and turbocharging
      Manufacturer Komatsu and Case
      Model SAA6D107E-1 and 6T-830

      Hydraulic system

      Type of pump gear type pump and pumps with twin vanes
      Overflow valve pressure 3000 lb / sq. inch and 2775 lb / sq. inch

      Gear box

      Transmission type Hydrostatic, 1 pump, 2 electric motors with the speed range selection and 4F / 3R (4 forward / 3 reverse speeds) proportional with electronic control module, with torque measurement, automatic / manual shifting and modulating
      Forward gears number 4 and 4

      Images

      Sizes

      1. Length with bucket on ground level 7055 mm 1. Length with bucket on ground level 6890 mm
      2. Between tyres width 2470 mm 2. Between tyres width 2530 mm
      3. Height to cab upper part 3200 mm 3. Height to cab upper part 3260 mm
      4. Wheelbase 2900 mm 4. Wheelbase 2900 mm
      5. Clearance 465 mm 5. Clearance 419 mm
      6. Hinge axis maximum height 3795 mm 6. Hinge axis maximum height 3810 mm

      Shovel

      7. Unloading ground clearance at maximum lifting 2850 mm 7. Unloading ground clearance at maximum lifting 3010 mm